Is natural gas renewable?

Microorganisms are at the forefront of futuristic energy generation. In 2009, the Pacific Northwest National Laboratory, which is part of the U.S. Department of Energy, developed a process called catalytic hydothermal gasification. This process mines huge amounts of natural gas, or biomethane, out of algae. What's even more Earth-friendly about this process is that the carbon dioxide byproduct from burning this biofuel can be recycled. It's used to feed the algae.